Recycable component with data storage for storing information for examining the component and product including such a component

Abstract: The invention relates to the problem of recycling of products of complicated structure and is based on the idea to provide each component (2 to 6) of the product with a memory (2a, 2b ... 6b) in which not only at the timing of production information such as location of material to be recycled is stored but also additional data, e.g., about repair and/or specific stress to which the component has been exposed during its use. Such additional data may be collected via specific sensors (7, 8) provided either on each component or in or on the body of the product to be memorized in the memory of each component. Based on the idea of the invention, the life history of each component of the discarded product can be checked individually for determining whether such component may be reused or disposed for disassembling and recycling.

Description: The invention relates to a method of recycling several components being included in a product. There are many different kinds of products made by different manufacturers coming into the market and each such product also contains many different kinds of components. If a product becomes obsolete or is taken out of service, the user wants to abandon the product and usually disposes it in one or another undesirable way. Even if the product itself becomes old or invalid, components contained in the product or a part of each component, however may be reused in another product. Therefore, recently recycling of those components is eagerly discussed under an environmental point of view. One way to enable recycling of a component easier is to indicate on the surface thereof the kind of material which constitutes the component. For example, if a component such as a housing of a television receiver or a chassis of automobile is formed of a single plastic or metal material, the component can bear the name of the material or a symbol representing the same. It is, however, very difficult to indicate enough information to reliably recycle the component, if the latter is comprised of many kinds of materials or has a complicated constructional composition. As a type of recycling of a component, it has also been considered to reuse the component as it is, without breaking it up, i.e., in an appliance of same type or in a similar type of the product in which the component was used before, or as a service spare part. In that case, the indication of the kind of material is insufficient and it is more important to know how long the component has already been used or whether the component can still be reused for long enough a period in the future. Such information is very important, especially for electrical components or mechanical components having a movable part. Such transitional information can not be indicated properly on the surface of a component. Meanwhile, it is known, for example by Canadian Patent 1,272,808, to include a memory in the product for storing information data as to production and repair or maintenance service of the product. Such information, however, is useless for recycling, because some components taken from the product are transferred to a recycling process instead of the product itself. Furthermore, if the product has not been repaired in spite of that the component has been impaired or damaged, such information is incomplete and not reliable. According to US-Patent 4,586,147, a product may be further provided with a sensor detecting failure information of the product during its use. The failure information and the history information as to the failures which is stored in a memory provided in the product can be used for maintenance. However, because such failure information and history information will remain only in the main body of the product when the consumed product is forwarded to recycling, it is impossible to know any defect caused in each or at least in the essential components of the product. It is also known, for example, from UK Patent Publication GB 2116748 A, that each circuit board comprising a plurality of components may include a memory for storing information as to assembly or testing which is necessary during production. In the course of testing, if any faulty component mounted on the circuit board is found, the identity of the faulty component is written into the memory and any necessary remedial action will be taken as part of the production. Therefore, only circuit boards including no faulty components can be used for completing the product. However, there is no way to identify any defect of the circuit board occuring during the use of the product, which, however, is a most important information for recycling. UK Patent Publication GB 2142172 A also discloses that each assembly or sub-assembly constituting a product has a memory for storing elasped time and maintenance information such as the time of the last overhaul. However, such information is not sufficient for recycling the assembly or sub-assembly. After all, in the above described prior art, it is very difficult to examine and to disassemble discarded products comprising several components properly before forwarding to recycling of each component and easily evaluate each component which has been taken from the discarded products and which may have defects caused during its use. These problems are solved by a method according to claim 1. One way of carrying out the invention is described in detail below with reference to drawings which illustrate a specific embodiment, in which: Fig. 1 is a schematic block diagram showing a television receiver; and Fig. 2 is a schematic block diagram showing an example of component including a check system for checking the condition of the component. Referring to Fig. 1, a television receiver 1 has normally an input circuit board 2 including an antenna input terminal, a tuner and auxiliary input terminals, a signal processing circuit board 3, a cathod ray tube 4, a power supply 5 and' a central processing unit (hereinafter CPU) 6 as its main components. It will be omitted to explain the well known function and operation of each component and the television receiver 1, which are irrelevant to the invention. The voltage source is supplied from the power supply 5 to respective components 2, 3, 4 and 6. Control. signals from the CPU 6 are supplied to respective components 2, 3, 4 and 5 so as to control the same during operation of the television receiver 1. Each component 2, 3, 4, or 5, which or a part of which is aimed to be recycled, has a memory unit 2a, 3a, 4a or 5a (an internal memory installed in the CPU 6 may be used as a memory unit for the CPU 6) which can store information data necessary for the evaluation of the component before forwarding to recycling. Such information data can be classified into two types; active data and passive data. Active data may include, for example, information as to stress to which the component has been exposed during use, i.e., a) maximum / minimum temperature; b) maximum acceleration (in case the component has been dropped or shocked); c) maximum power consumption; d) maximum voltage; e) maximum humidity exposure; f) malfunction caused by the component; g) short circuit occurred in relation to the component; h) operation hours of the component; i) outgassing; j) emissions; k) electromagnetic radiation: each exceeding a given tolerance and how long and how often, but not limited to those. Such information classified into active data is detected by one or more physical (mechanical) or chemical sensor(s) 2b, 3b, 4b, 5b, 6b, 7 or 8 provided within the television receiver 1 or directly in or on each component 2, 3, 4, 5 or 6 and stored selectively into each memory 2a, 3a, 4a or 5a. Each component 2, 3, 4 or 5 may require different information to be evaluated according to the nature of the component, therefore, different sensors may be used. Some sensor, however can be commonly used for different kinds of components. The television receiver 1 may have a separate memory unit (though not illustrated) for storing information data commonly related to several components or information data related to the television receiver 1 as a whole, such as construction of the television receiver 1, the locations of the components or instruction of disassembly. Such information may be very useful for automatic or even manual disassembly. Such separate memory unit may be replaced with the memory of the CPU 6. All or some of the memory unit might be also connected through a data bus 9 to a diagnostic connector 10 provided to the external of the television receiver 1, which enables data retrieving without opening the housing. If the television receiver 1 is connected to the main power source regardless whether the television receiver 1 is actively used or operated in the stand-by mode, the central processing unit 6 is always operative so that the detected signal from each sensor 2b, 3b, 4b, 5b, 6b, 7 or 8 can be processed, and the above described stress data is stored or renewed in each memory unit 2a, 3a, 4a or 5a, or in the internal memory of the CPU 6. In case that each sensor is a self-hold type which can maintain the condition detected last, even if the television receiver 1 has been disconnected from the main power source, the CPU 6 can store and release the last detected condition from each sensor 2b, 3b, 4b, 5b, 6b, 7 or 8 as long as the television receiver 1 is connected to the main power source. If the television receiver 1 is a battery operated type or installed with a back-up battery, there is also no problem. In addition to the above active data, each memory unit 2a, 3a, 4a or 5a of each component 2, 3, 4, 5 or 6 must or may further store passive or supplementary information data. Passive data may include, for instance, manufacturing data of the component which has been set in the factory. Supplementary (active or passive) data may include, for instance, distribution and sales data of the component which has been set during distribution and assembly of the finished product; history of repair and maintenance sevice data which has been set during repair and maintenance service; data of technical conditions for product guarantee in order to protect against unjustified guarantee claims. These memory units might be used for secondary purposes. If a power management unit is built into the product in order to reduce energy consumption during normal usage of the product, relevant data can be stored in a memory unit. The manufacturing data of the component may include manufacturer information such as trademark or name of producer, model name or number, individual product number or serial number, manufacturing date and place, specifications, composing materials - the sorts of applied plastics and additives, locations of built-in hazardous materials, official life of the component, manufacturing history, testing information, fault reporting information. The information regarding manufacturer might be used to classify products or components collected for recycling according to the manufacturer. This is useful, for example, in deciding the interchangeability of certain components in the field of services. The information regarding specifications or locations of the applied materials will help recyclers in the removal of hazardous materials or, the recovery of precious metals and sorting of plastic fractions. The distribution and sales data of the component may includes wholesaler and retailer's name, purchase date, sales date, purchase price, selling price, destination. If the ownership of the component is changed on recycling, such information on the ownership can be stored or modified by recyclers. The history of repair and maintenance sevice data may includes replacement information of the component, parts repair and adjustments of only part of the component. The above described active, passive and supplementary information data can be stored in a certain format, preferably in a common format regardless of type of components. More preferably, the information data are categorized according to the nature of the information as described above and stored selectively in designated memory areas or stored as block data together with data identifying the categories. As all or some of passive data is riot required to be modified, even service personnel, vendors and recyclers have no possibility to input or rewrite all or some of passive data into the memory units. Active data is relatively important to evaluate the component to be recycled and to assess the commercial value thereof. To prevent data manipulation, the stored data are selectively tamper-proof by means of appropriate memory media and recording mechanisms for example encryption as occasion demands. Therefore, only authorized personnel can modify some active data, passive data and supplementary data with special devices, if necessary. For example, the official life time set by the first manufacturer of the component may be replaced with an official life time estimated by the supplier of the recycled component on the basis of the residual life time and the quality check result. Therefore, an appropriate type of memory such as PROM, EPROM or EEPROM may be selected for each memory unit according to the function thereof to be required and the category of information data to be stored thereinto. Referring to Fig. 2, more detail construction of each component is explained. The component 11 has, besides its own functional elements, the memory unit including a memory 12, a memory controller (or interface) 13 and a sensor 14 as an option. The memory 12 is preferably a non-volatile memory as the component will be examined even after being taken out from the product. The memory unit might be a dual-port type, one port for recording active data, one port for retrieving active and passive data. In that case, the memory unit has an input terminal 15a and an output terminal 15b. These terminals may be combined in a single input/output terminal. The stress information detected by the sensor 7 or 8 provided within the television receiver 1 as shown in Fig. 1 or by the sensor 14 provided to the component 11 is supplied to the CPU 6 provided within the television receiver 1 as shown in Fig. 1, if the detected stress information is required to be processed so as to form a proper data signal. The processed data signal derived from the CPU 6 is written into the memory 12 through the input terminal 15a and the memory controller 13. The stress information detected by the sensor 7, 8 or 14 is supplied through the input terminal 15a or other terminal or the memory controller 13 to the memory 12, if the detected stress information is not required to be processed. Other active data, passive data and supplementary data can be also stored in a similar manner to the above. As a sophisticated embodiment, the component 11 or the memory unit may include a micro-processor with a memory instead of the memory controller 13, which can replace the CPU 6 in connection with the invention. Even each component 11 may have an own battery. When the television receiver 1 becomes outdated or should be taken out of service and is forwarded to recycling, the information data stored in the memory units can be used to manage the distribution, disassembly and disposal process. From each of discarded and then collected television receivers, the information stored in the memory units are read out through the diagnostic connector 10 to check quality of each component with a check device 16 and assist in deciding which components still have a relatively high residual value. Television receivers containing component of higher residual value are then sent to automatic or manual disassembly line for recovery of valued components, possibly according to the information of the location of the valued component and instruction data of disassembly. The disassembled components are sorted into same kind or type according to the passive information. Such sorted components are subjected to dedicated quality checks in more detail and classified according to the stress information into a specified tolerance field allowing a defined future use. Components qualified or certified for reuse are subsequently refurbished if requested and forwarded to manufacturers using the qualified or certified components. Similary, the components with a high content of pure plastics or precious materials are sent to dedicated recovery lines. Particularly, hazardous materials can be removed safely and with certainty, since detailed information about the materials and their locations in the components is also avaliable in the memory units. The check device 16 has an input terminal 17a, a data processor 18 and, if necessary, an output terminal 17b which may be combined with the input terminal 17a. The component 11 is connected to the check device 16 through the output terminal 15b of the former and the input terminal 17a of the latter, through the diagnostic connector 10 before disassembly or directly after disassembly. The data processor 18 of the check device 16 reads out the information data stored in the memory 12 through memory controller 13 and the output terminal 15a. The data processor 18 of the check device 16 may output information data to be stored in the memory 12 through the input terminal 15a and the memory controller 13. The connection of the component 11 and the check device 16 can be achieved by means of wireless data transmission to allow easy automation of the check procedure. In that case, the component 11 and the check device 16 are provided with wireless transmitters and receivers, respectively, instead of the output terminals 15b and 17b and the input terminals 15a and 17a, respectively. Although memory units are solely used for storing information data, bar code or printed markings can be used also for storing relatively simple static information data in combination with the memory units. The product may be any of an electric, electronic or mechanical product.

Claims: Method of recycling several components of a product comprising steps of: a) reading out from memory means (2a, 3a, 4a, 5a, 6; 12) provided within the product information data commonly related to said several components Or to said product as a whole, said information data being related to bibliographic data of said several components (2, 3, 4, 5, 6, 11), to stress to which said several components have been exposed and to at least one of location data of said several components and instruction data of disassembly of said product; b) checking the quality of said several components according to the information data related to the stress; c) disassembling the product to separate said several components according to the location data and/or the instruction data; d) sorting said several components according to the bibliographic data; and e) forwarding said several components to subsequent use thereof. Method according to claim 1, further comprising step of: f) Oproducing quality data representing the quality of said several components, wherein said step of sorting includes sorting said several components according to the quality data.

Inventors: LAGADEC ROGER DR, SCHEIDT LUTZ-GUENTHER DR, ZONG SHUGIANG DR-ING, LAGADEC, ROGER, DR., SCHEIDT, LUTZ-GUENTHER, DR., ZONG, SHUGIANG, DR.-ING., Scheidt, Lutz-Günther, Dr.
Applicants: SONY DEUTSCHLAND GMBH
Application year: 1994
Main classification: G07C3
IPC codes: G07C3